US 12,187,073 B2
Method for manufacturing a one-piece wheel by forging and a one-piece wheel manufactured thereby
Young-Chan Kim, Yongin-si (KR); Young-Rae Jo, Seoul (KR); Jun-Min Lee, Seoul (KR); Byoung-Ok Park, Incheon (KR); Young-Sik Kim, Incheon (KR); and Geon-Ki Han, Incheon (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and HANDS CORPORATION Ltd., Incheon (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and HANDS CORPORATION Ltd., Incheon (KR)
Filed on Apr. 12, 2022, as Appl. No. 17/718,556.
Claims priority of application No. 10-2021-0171208 (KR), filed on Dec. 2, 2021.
Prior Publication US 2023/0173840 A1, Jun. 8, 2023
Int. Cl. B60B 3/02 (2006.01); B21D 22/16 (2006.01); B21D 53/26 (2006.01); B21K 1/32 (2006.01); B23K 20/12 (2006.01)
CPC B60B 3/02 (2013.01) [B21D 53/264 (2013.01); B21K 1/32 (2013.01); B21D 22/16 (2013.01); B23K 20/122 (2013.01); B23K 20/1255 (2013.01); B23K 20/129 (2013.01); B60B 2310/208 (2013.01); B60B 2310/211 (2013.01); B60B 2310/224 (2013.01); B60B 2310/3025 (2013.01); B60B 2900/113 (2013.01); B60B 2900/133 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for manufacturing a one-piece wheel by forging, the method comprising:
producing an integral forging comprising: a disc portion, a rim portion, and an annular protrusion protruding from one side of the disc portion toward the rim portion in a forging method;
producing an outer bend by bending the annular protrusion through a flow-forming process; and
forming a hollow portion by welding one end of the outer bend to one side of the rim portion.